number.wiki
Number

1,387

1,387 is a composite number, odd, a calendar year.

Deficient Number Harshad / Niven Squarefree Year

Properties

Parity
Odd
Digit count
4
Digit sum
19
Digital root
1
Palindrome
No
Divisor count
4
σ(n) — sum of divisors
1,480

Primality

Prime factorization: 19 × 73

Divisors & multiples

All divisors (4)
1 · 19 · 73 · 1387
Aliquot sum (sum of proper divisors): 93
Factor pairs (a × b = 1,387)
1 × 1387
19 × 73
First multiples
1,387 · 2,774 · 4,161 · 5,548 · 6,935 · 8,322 · 9,709 · 11,096 · 12,483 · 13,870

Representations

In words
one thousand three hundred eighty-seven
Ordinal
1387th
Roman numeral
MCCCLXXXVII
Binary
10101101011
Octal
2553
Hexadecimal
56B

Also seen as

Unicode codepoint
ի
U+056B
Lowercase letter (Ll)

UTF-8 encoding: D5 AB (2 bytes).

Hex color
#00056B
RGB(0, 5, 107)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.107.